Everything Carriers & Brokers Need to Know About CSA Scores

A CSA (compliance, safety, accountability) score is generally one signal among many that feeds into a broker’s larger carrier management process, but it may not tell a carrier’s complete story. CSA scores are assigned to a motor carrier’s DOT number, and the lower the score, the better positioned that carrier looks on paper.

Brokers lean on CSA scores because they’re one of the fastest signals available on a carrier. The trouble starts when that signal gets treated as a final answer instead of one input among several.

FMCSA has been clear that a CSA score is a tool for prioritizing enforcement, not a stand-alone verdict on how safe a carrier is. So what is a CSA score, how is it calculated, and how can a broker actually use it?

What is the CSA program?

The CSA program is the safety compliance and enforcement program of the FMCSA (Federal Motor Carrier Safety Administration). This program holds motor carriers accountable for their role in road safety.

The CSA program identifies motor carriers with safety issues and prioritizes them for interventions such as warning letters and investigations. The FMCSA holds the safety record of each carrier in its SMS (Safety Measurement System), and updates it monthly with new data from roadside inspections.

Here’s what SMS data considers:

• The number of inspections and safety violations
• The severity of any safety violations and crashes
• The timing of the violation (more recent events are weighted heavier)
• The number of trucks that a carrier operates
• The number of critical violations found during an investigation

What is a CSA score?

The FMCSA uses CSA scores to identify high-risk motor carriers that might require interventions. Only violations that occur while operating commercial vehicles, not personal vehicles, are included in the calculation of a CSA score.

A carrier’s score is based on the performance data of its drivers. As a broker, checking CSA scores is one part of understanding who you’re working with, alongside separate checks including a free MC and DOT lookup that show a carrier’s authority and insurance status. FMCSA has stated that a BASIC percentile does not affect, and is not, a carrier’s safety rating.

Understanding the CSA BASICs

The FMCSA uses BASICs, Behavior Analysis and Safety Improvement Categories, to determine a motor carrier’s safety performance and compliance. A carrier’s percentile ranking in each category feeds into their overall CSA score.

The seven BASICs are:

• Unsafe driving: speeding, reckless driving, improper lane changes, texting, and similar violations
• Crash indicator: crash history over the last two years (not public)
• Hours-of-service compliance: violations of federal HOS rules that ensure drivers get proper rest
• Vehicle maintenance: brakes, lights, and other equipment defects
• Controlled substances/alcohol: violations tied to drug and alcohol use
• Hazardous materials compliance: packaging, marking, and placarding violations (not public)
• Driver fitness: license validity and medical certification, not a driver’s physical fitness

How CSA scores are calculated

FMCSA assigns points to carriers, ranking the number and severity of violations and accidents on a scale from 0 to 100. Recent violations count more than older ones, and the number of miles a carrier’s trucks travel factors into the math too.

Not every violation carries the same weight. The most severe violations, like texting while driving, reckless driving, or driving under the influence, sit at the top of the scale. Less severe issues, like a missing logbook entry or an obscured reflector, sit lower.

The exact point values are spelled out in FMCSA’s SMS Methodology. The takeaway for brokers is simple: a handful of serious violations can move a carrier’s percentile more than a longer list of minor ones.

The four main categories of FMCSA ratings

If a carrier is chosen for a CSA compliance review, it will result in one of the following ratings:

• No Rating: This is given to carriers that have not yet undergone an investigation.
• Satisfactory: Carriers that meet or exceed FMCSA guidelines for safety practices are deemed satisfactory.
• Conditional: Investigators may rate a carrier as conditional if a review determines that most of the FMCSA safety guidelines are being followed, but there is some need for intervention or correction.
• Unsatisfactory: An unsatisfactory rating applies to trucking companies where reviews have uncovered significant deficiencies in FMCSA safety guidelines.

A Conditional or Unsatisfactory rating is worth a closer look, but a Satisfactory rating, or no rating at all, doesn’t settle the question on its own. FMCSA itself notes that a carrier’s overall safety condition shouldn’t be judged from this data alone.

How to use or interpret a CSA score

A CSA percentile is useful, but it works best as one data point among several, not the deciding factor on its own.

SMS draws from roadside inspections, violations, and crash reports. That’s a real signal, but it isn’t the whole carrier.

Several things that matter to a carrier decision sit outside that dataset entirely, and none of them necessarily move a percentile or a formal rating:

• English Language Proficiency violations
• Ownership changes
• Nondisclosure of affiliation with other FMCSA-regulated entities
• Insurance irregularities
• Maintenance trends that haven’t yet produced a cited violation
• Contact information changes

A carrier can look clean by the numbers and still be carrying one of these flags. As a freight broker, one more useful approach is to combine CSA percentiles with other carrier compliance data points and reports when evaluating carriers for your network.

Used this way, CSA data helps you weigh violation and crash risk without treating a single number as the whole answer, and it lines up with what brokers check before booking a carrier more broadly.

Use Carrier Hub to keep carrier data current

Whether you’re experienced with checking CSA scores or you’re new to the process, doing it manually can be tedious and time-consuming. A carrier’s status can change after onboarding just as easily as before it, and you need to know that the carrier data you’re depending on is current and accurate.

That’s why it helps to use a tool like Carrier Hub to bring carrier data together in one place. Carrier Hub is designed to bring authority, insurance, and safety data into a single carrier profile, scored against the rules a broker sets, which is the standard worth holding any platform to when choosing a compliance tool.

A CSA score tells you part of the story. Carrier Hub is built to help bring more of the picture together in one place.

Get started